WO2007124678A1 - Appareil d'antenne, réseau cellulaire sans fil et procédé pour accroître la capacité de réseau cellulaire sans fil - Google Patents

Appareil d'antenne, réseau cellulaire sans fil et procédé pour accroître la capacité de réseau cellulaire sans fil Download PDF

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Publication number
WO2007124678A1
WO2007124678A1 PCT/CN2007/001312 CN2007001312W WO2007124678A1 WO 2007124678 A1 WO2007124678 A1 WO 2007124678A1 CN 2007001312 W CN2007001312 W CN 2007001312W WO 2007124678 A1 WO2007124678 A1 WO 2007124678A1
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WO
WIPO (PCT)
Prior art keywords
phase
layer
output
antenna
signal
Prior art date
Application number
PCT/CN2007/001312
Other languages
English (en)
Chinese (zh)
Inventor
Yarui Li
Ming Ai
Tianzhong Zhao
Jindi Jiang
Guanxiang Ying
Original Assignee
Huawei Technologies Co., Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CNA2006100744888A external-priority patent/CN1968487A/zh
Priority claimed from CN2006100871597A external-priority patent/CN1983858B/zh
Application filed by Huawei Technologies Co., Ltd filed Critical Huawei Technologies Co., Ltd
Priority to AT07720885T priority Critical patent/ATE531221T1/de
Priority to CN2007800002787A priority patent/CN101313616B/zh
Priority to EP07720885A priority patent/EP1906690B1/fr
Priority to ES07720885T priority patent/ES2373465T3/es
Publication of WO2007124678A1 publication Critical patent/WO2007124678A1/fr
Priority to US12/010,015 priority patent/US8463323B2/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
    • H01Q3/40—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with phasing matrix
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures

Definitions

  • the present invention relates to mobile communication technologies, and in particular, to an antenna device, a wireless cellular network, and a method for expanding a wireless cellular network.
  • the mobile communication system is covered by a number of base stations (BTS).
  • the existing base station antenna has a single-column antenna, only the feeder network in the longitudinal direction, and there is no feeder network in the horizontal direction. The pattern is approximate.
  • a mobile communication system has many cells. Therefore, the network investment cost is large, and generally it will reach several. From tens of billions to hundreds of billions. Obviously, let each base station cover a larger area (that is, a larger cell area), the number of base stations is smaller, and the investment cost is less.
  • the capacity of a base station is limited. The coverage area is large, and the capacity density is small. When the number of users increases, a new base station needs to be added. This situation is called network expansion. With the addition of a new base station, the original single cell coverage area is reduced to be new. Increase the coverage area of the base station, called network splitting or splitting
  • An ideal networking method is to make each base station cover a larger area when initial network construction, so that the initial investment is small (because the user's network access is increasing from zero), and the investment capital and risk are small.
  • the expansion of the network splitting method requires a lot of additional costs, and the local network also needs to be complicatedly re-adjusted. Therefore, the expansion of the network is "not smooth" and is not a low-cost expansion. Rong. Therefore, the low investment of initial investment and the high cost of expansion create a contradiction.
  • Existing wireless cellular systems are basically built in three-sector form.
  • the advantages of this method are as follows: 1.
  • the antenna pattern and the coverage area form the best fit; 2.
  • the cell is relatively standardized, and the antennas between the base stations point away from each other, so that the interference between the network cells is minimized.
  • FIG. 1 a three-sector coverage diagram is shown.
  • the circle in the figure indicates the location of the base station, and the arrow indicates the orientation of the antenna of the base station.
  • the orientation of the antennas in this structure is staggered from each other, which is a better networking mode. It is widely used.
  • the wireless communication system especially the 3G wireless communication system using WCDMA and CDMA2000 standards, adds new base station expansion, in addition to adding necessary equipment, it will bring more additional costs. For example, adding a new site will bring the site. Construction costs.
  • the new base station needs to re-plan the new base station and the original base stations around it, which will bring new problems. Therefore, the new base station has a jump in cost, technology, and engineering implementation. This expansion is not smooth.
  • FIG. 2 is a topology diagram after the expansion.
  • the original antenna must be replaced with a new specification antenna due to the change of the coverage area, and the pointing and tilt angles must be interactively adjusted together with the antenna of the newly added base station.
  • the pointing and tilt angles must be interactively adjusted together with the antenna of the newly added base station.
  • due to irregular coverage areas no matter how adjusted, some dead zones are difficult to obtain good coverage. It can be seen that to maintain the three-sector network structure, the location of the original base station has to be changed, and the coverage has also changed, which will have a greater impact on the original network.
  • the principle of "one-time planning" network planning is generally adopted, that is, the network is planned according to the demand for capacity within a few years.
  • This kind of planning ensures that the network capacity is sufficient within a few years, so there is no need to expand.
  • this also means that a sufficient number of base stations are deployed at the beginning of the wireless network construction.
  • the advantage of this way is that it is not used for several years.
  • the disadvantage of adding new base stations is that the initial investment is relatively large, which brings relatively large investment pressure to operators. Moreover, the number of base stations has not decreased, and the total site cost has not been reduced.
  • the current "one-time planning" networking method adopted is a kind of solution that has to be avoided as much as possible to avoid the problem of expansion without solving the problem of smooth expansion.
  • the disadvantages are:
  • the initial investment cost is large; "One-time planning" is to ensure that the network capacity is sufficient in a few years, and there is no need to expand capacity. This means that more cellular networks must be built at one time, so the initial investment cost is large, and the financial cost is increased. Risk
  • each base station has some fixed costs, such as station fee, battery fee and rental fee, the more sites, the higher the cost, because the number of base stations that need to be invested in "one-time planning" is large, Therefore, the site cost is higher;
  • the embodiments of the present invention provide an antenna device, a wireless cellular network, and a method for expanding a capacity, which can expand and expand a communication network conveniently and efficiently.
  • an antenna device including:
  • a connector unit configured to be connected to the base station, to receive an input signal from the base station;
  • an amplitude phase allocation unit configured to allocate an input signal received by the connector unit according to a designed amplitude and phase;
  • An antenna unit including an antenna of an even-numbered antenna array, for receiving amplitude and phase distribution The input signal is transmitted and emitted.
  • a wireless cellular network including:
  • a base station configured to generate a signal
  • An antenna device for distributing signals from the base station according to a designed amplitude and phase, and transmitting the antenna through an even array of antennas.
  • a method for implementing wireless cellular network expansion comprising the steps of: receiving an original signal from a base station;
  • the signal after the amplitude phase distribution is transmitted through the antenna of the even-column array, and the capacity of the network is expanded to a set multiple.
  • the invention adopts an even array of antenna arrays and improves the feed network structure of the antenna system.
  • a regular hexagonal sector covered by the existing base station antenna can be divided into two halves.
  • a regular hexagonal sector, or a sector covered by an existing base station antenna is divided into a plurality of sectors according to a set multiple.
  • the number of base station sites can be increased without adjusting the antenna pointing. It achieves smooth expansion and reduces the workload and complexity when expanding.
  • it can increase the coverage of the base station during networking, thereby reducing the number of base stations and lowering the cost of P.
  • FIG. 1 is a schematic diagram of coverage of a base station in the prior art
  • FIG. 2 is a schematic diagram of coverage of a base station after capacity expansion in the prior art
  • FIG. 3 is a structural diagram of an antenna device according to an embodiment of the present invention.
  • FIG. 4 is a structural diagram of an amplitude phase distribution network according to an embodiment of the present invention.
  • FIG. 5 is a structural diagram of an amplitude phase distribution network according to another embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an antenna connected to a base station by a power splitter according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of an antenna when an antenna is connected to a base station through a power splitter according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of an antenna directly connected to a base station according to an embodiment of the present invention
  • FIG. 9 is a diagram showing an antenna pattern when an antenna is directly connected to a base station according to an embodiment of the present invention. detailed description
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • FIG. 3 is a structural diagram of an antenna device according to the embodiment.
  • the device is connected to the base station through the left connector 1 and the right connector 2, and further includes: an amplitude phase distribution network 3 for allocating signals of the base station to the designed amplitude and phase.
  • Antenna array for a split antenna 4 of a four-column antenna array for transmitting and receiving signals.
  • the signal output from the left connector 1 or the right connector 2 passes through the amplitude phase distribution network 3 to generate four outputs, which are respectively connected to the antenna array 4.
  • the structure of the amplitude phase distribution network 3 is as shown in FIG. 4, and specifically includes:
  • Two grounding matching resistors 6 for absorbing a residual signal leaking from a 3 dB 90-degree bridge 5; two 90-degree phase shifters 71 and 72 for outputting one layer of a 3 dB 90-degree bridge 5 The phase of the signal is delayed by 90 degrees and output;
  • Two two-layer 3 dB 90-degree bridges 81 and 82 are used to split the two input signals into two outputs, and the two output signals are 90 degrees out of phase;
  • Two three-layer, three-decibel, 90-degree bridges 101 and 102 are used to split the two input signals into two outputs.
  • the two output signals are 90 degrees out of phase, and the output signals are output through the four-column antenna array 4.
  • the signal input from the left joint 1 or the right joint 2 passes through the amplitude phase distribution network 3, and four outputs are generated, the relative amplitude is 0.4/1/1/0.4, and the phase is incremented or decremented by 90 degrees. Amplitude and phase allow for some error. For a 3-dB 90-degree bridge, there is theoretically only one input, but there is a leakage signal in actual use, so two ground-matching resistors 6 are used to absorb the excess signal.
  • the network structure of the amplitude phase distribution network of this embodiment is symmetrical, and the standing wave is good.
  • the antenna device in this embodiment may also be implemented by using multiple parallel antennas.
  • the joint coverage area of each sub-sector formed by multiple parallel antennas and the corresponding fan before the splitting can be realized.
  • the coverage area of the area corresponds.
  • the corresponding carrier is set in the sub-sector formed after each split without changing the coverage of the base station, thereby realizing the expansion of the network.
  • a two-sector antenna is used to expand a three-sector structure network.
  • two parallel antennas it is designed to ensure that the joint coverage area of the two sub-sectors after the splitting of the two parallel antennas corresponds to the coverage area of the corresponding sector before the splitting.
  • the number of sectors is increased, and more carriers can be set, which is equivalent to increasing the number of terminals.
  • the antenna patterns formed by the two parallel antennas are bilaterally symmetric, that is, the respective sectors of the base station are split into corresponding two left and right symmetric sub-sectors, in which case
  • network capacity will increase by a factor of two. .
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the antenna structure is the same as that of the antenna in the first embodiment.
  • the structure of the amplitude phase distribution network 3 is as shown in FIG. 5, and specifically includes:
  • Two 7.7 decibel couplers 111 and 112 are used to split one input signal into two outputs, and the difference between the two output signals is 7.7 dB;
  • Two 180 degree phase shifters 121 and 122 are used to output the phase of one output signal of the 7.7 decibel coupler by 180 degrees and output;
  • Two 3-dB 90-degree bridges 131 and 132 are used to split the two input signals into two outputs.
  • the two output signals are 90 degrees out of phase, and the output signals are output through the four-row antenna array.
  • the function of the amplitude phase distribution network of this embodiment is the same as that of the first embodiment, but compared with the first embodiment, the amplitude phase distribution network of this embodiment has only two levels, and therefore has the advantage of less loss.
  • the base station antenna device of the present invention is connected to the base station through a power splitter 14 during initial networking, and the function of the power splitter 14 here is that the power of the 4 bar base station signal is divided into two, as shown in FIG.
  • a signal from the base station is connected to the input end of the power splitter 14.
  • the signal is split into two paths and then connected to the two input connectors of the antenna. After the amplitude phase is allocated, the signal is transmitted by the multi-column antenna array.
  • Performing the amplitude phase allocation by using the amplitude phase distribution network in Embodiment 1 specifically performs the following steps:
  • the base station signal entering from the left connector 1 passes through a layer of 3 dB 90 degree bridge 51, and the power is divided to produce two outputs, wherein the phase of one output is delayed by 90 degrees from the phase of the other output;
  • An output of the one-layer 3-dB 90-degree bridge 51 passes through a 90-degree phase shifter 71, and the phase is delayed by 90 degrees and then enters the second-layer 3-dB 3-degree 90-degree bridge 82, and the power is divided to produce two two-layer outputs.
  • the phase of one of the outputs is delayed by 90 degrees from the phase of the other output; the other output of the one-layer 3 dB 90-degree bridge 51 enters the second-layer 3 dB 90-degree bridge 81, and the power is equally divided to produce two more Two-layer output, one of which has a phase that is 90 degrees behind the phase of the other output;
  • One of the two two-layer outputs passes through a 45-degree phase shifter 92, and the phase is delayed by 45 degrees and then enters the three-layer 3-dB 90-degree bridge 102.
  • the power is divided to produce two three-layer outputs, one of which is output.
  • the phase is 90 degrees behind the phase of the other output, the one output enters the antenna array b, the other output enters the antenna array d; the other of the two two-layer outputs enters three layers of 3 dB and 90 degrees Bridge 101, the power is divided to produce two three-layer outputs, one of which has a phase that is 90 degrees behind the phase of the other output, the one output entering the antenna array a and the other output entering the antenna array c;
  • One of the two-layer outputs enters the three-layer 3-dB 90-degree bridge 102, and the power is divided to produce two three-layer outputs, one of which has a phase that is 90 degrees behind the phase of the other output, and the one output enters the antenna.
  • the other output enters the antenna array b; the other of the other two two-layer outputs passes through a 45-degree phase shifter 91, and the phase is delayed by 45 degrees and enters the three-layer 3-dB 90-degree bridge 1 01, the power is divided to produce two three-layer output, one of the phases of the output is delayed by 90 degrees from the phase of the other output, the one output enters the antenna array c, and the other output is today antenna array a;
  • the processing of the base station signal entering from the right connector is the same as the above process.
  • Performing the amplitude phase allocation by using the amplitude phase distribution network in Embodiment 2 specifically performs the following steps:
  • the base station signal entering from the left connector 1 enters the 7.7 decibel coupler 111, one output power is 7.7 decibels lower than the other output power; one output of the 7.7 decibel coupler 111 enters the 3 decibel 90 degree bridge 131, the power is After halving, two outputs are generated, one of which has a phase that is 90 degrees behind the phase of the other output, the one output entering the antenna array a, the other output entering the antenna array d; the other of the 7.7 decibel coupler 111 An output passes through a 180 degree phase shifter 121, the phase is delayed by 180 degrees and then enters a 3 dB 90 degree bridge 132.
  • the power is divided to produce two outputs, one of which has a phase that is 90 degrees behind the phase of the other output.
  • the one output enters the antenna array c, and the other output enters the antenna array b;
  • the base station signal entering from the right connector 2 enters the 7.7 decibel coupler 112, the power of one output is 7.7 decibels lower than the power of the other output; one output of the 7.7 decibel coupler 112 enters the 3 decibel 90 degree bridge 131, power After being equally divided, two outputs are generated, one of which has a phase that is 90 degrees behind the phase of the other output, the one exiting into the antenna array d, the other output entering the antenna array a; the 7.7 decibel coupler 112 The other output passes through a 180 degree phase shifter 122, the phase is delayed by 180 degrees and then enters the 3 dB 90 degree bridge 132. The power is divided to produce two outputs, one of which has a phase lag 90 times that of the other output. Degrees, the one output enters the antenna array b, and the other output enters the antenna array c.
  • the number of terminals supported by the antenna coverage is the number of terminals supported by one signal, and after one base station input signal enters the connector of the antenna, the phase amplitude is allocated, and is transmitted through the four-column antenna array to the signal input end.
  • the antenna pattern for reference is shown in Fig. 7. At this time, the antenna behaves as a common antenna, and its coverage is a regular hexagonal cell, so that it can be networked like a normal antenna.
  • the number of antenna arrays is four columns because four columns of antenna arrays must be employed when employing the amplitude phase distribution network described in the embodiment. If other amplitude phase distribution networks are used to achieve the pattern achieved by the present invention, the number of antenna arrays is not necessarily four columns, but it must be an even column.
  • the program can be executed by instructing related hardware, and the program can be stored in a computer readable storage medium.
  • the program when executed, includes the steps of: receiving an original signal from a base station; The distribution is performed according to the set amplitude and phase; the signal after the amplitude phase distribution is transmitted through the antenna of the even array array, and the capacity of the network is expanded to a set multiple; the storage medium, such as: ROM/RAM, disk , CD, etc.

Abstract

La présente invention concerne un appareil d'antenne,un réseau cellulaire sans fil et un procédé pour accroître la capacité de réseau cellulaire sans fil appareil d'antenne. L'appareil d'antenne comporte: une unité d'interface pour dialoguer avec une station de base et recevoir un signal d'entrée provenant de la station de base; une unité de distribution amplitude et de phase pour distribuer le signal d'entrée reçu par l'unité d'interface selon des amplitudes et des phases prédéterminées; une unité d'antenne comportant une pluralité d'antennes sous la forme d'un réseau comprenant un nombre paire de colonnes, pour recevoir le signal d'entrée distribué par l'unité de distribution et le transmettre. La présente invention utilise un réseau d'antennes ayant un nombre paire de colonnes, et améliore la structure de réseau d'alimentation pour le système d'antenne, de sorte que la capacité du réseau cellulaire soit accru de manière souple par l'ajustement des amplitudes et des phases du signal d'origine provenant de la station de base, sans ajuster les directions des antennes, et il est possible de réduire la charge de travail et la complexité dans l'accroissement de capacité.
PCT/CN2007/001312 2006-04-21 2007-04-20 Appareil d'antenne, réseau cellulaire sans fil et procédé pour accroître la capacité de réseau cellulaire sans fil WO2007124678A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT07720885T ATE531221T1 (de) 2006-04-21 2007-04-20 Antennengerät und drahtloses mobilfunknetz
CN2007800002787A CN101313616B (zh) 2006-04-21 2007-04-20 天线装置、无线蜂窝网络及扩容的方法
EP07720885A EP1906690B1 (fr) 2006-04-21 2007-04-20 Appareil d'antenne et réseau cellulaire sans fil
ES07720885T ES2373465T3 (es) 2006-04-21 2007-04-20 Aparato de antena y red celular inalámbrica.
US12/010,015 US8463323B2 (en) 2006-04-21 2008-01-18 Antenna device, wireless cellular network and method of capacity expansion

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CNA2006100744888A CN1968487A (zh) 2006-04-21 2006-04-21 无线蜂窝网络及实现无线蜂窝网络扩容的方法
CN200610074488.8 2006-04-21
CN2006100871597A CN1983858B (zh) 2006-06-15 2006-06-15 基站的天线装置及利用其组网和扩容的方法
CN200610087159.7 2006-06-15

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/010,015 Continuation US8463323B2 (en) 2006-04-21 2008-01-18 Antenna device, wireless cellular network and method of capacity expansion

Publications (1)

Publication Number Publication Date
WO2007124678A1 true WO2007124678A1 (fr) 2007-11-08

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PCT/CN2007/001312 WO2007124678A1 (fr) 2006-04-21 2007-04-20 Appareil d'antenne, réseau cellulaire sans fil et procédé pour accroître la capacité de réseau cellulaire sans fil

Country Status (5)

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US (1) US8463323B2 (fr)
EP (1) EP1906690B1 (fr)
AT (1) ATE531221T1 (fr)
ES (1) ES2373465T3 (fr)
WO (1) WO2007124678A1 (fr)

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JP5570620B2 (ja) * 2010-02-25 2014-08-13 テレフオンアクチーボラゲット エル エム エリクソン（パブル） 変換行列を含む通信システムノード
WO2012095056A2 (fr) * 2012-03-05 2012-07-19 华为技术有限公司 Système d'antenne
JP5324014B2 (ja) 2012-04-20 2013-10-23 華為技術有限公司 アンテナ、基地局、およびビーム処理方法
WO2012103855A2 (fr) * 2012-04-20 2012-08-09 华为技术有限公司 Antenne et station de base
CN102931462B (zh) * 2012-11-20 2015-04-22 北京遥测技术研究所 宽频带高精度四馈网络
CN104052530B (zh) * 2014-06-19 2017-09-29 京信通信系统（中国）有限公司 Poi扩容装置及扩容poi系统
CA2994922C (fr) 2015-08-07 2019-02-26 Nec Corporation Multiplexeur/demultiplexeur, dispositif d'antenne et procede d'elimination d'evanouissement

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J.BUTTER; R.LOWE: "Beam forming matrix simplifies design of electronically scanned antennas", ELECTRONICS DESIGN, vol. 9, 1961, pages 170 - 173

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ATE531221T1 (de) 2011-11-15
US20080119149A1 (en) 2008-05-22
EP1906690A1 (fr) 2008-04-02
ES2373465T3 (es) 2012-02-03
EP1906690B1 (fr) 2011-10-26
EP1906690A4 (fr) 2008-08-06

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